fix: 完善交互、知识库目录与 Windows 运行库提示

src/main/index.ts

@@ -97,7 +97,7 @@ import { agentHubService } from './services/agent-hub-service'
 import { appLogger } from './app-logger'
 import type { AppLogEntry } from '../shared/app-log'
 import { appUpdateService } from './services/app-update-service'
-import { clearCache, getCacheSummary } from './services/cache-service'
+import { clearCache, getCacheSummary, openKnowledgeDirectory } from './services/cache-service'
 import type { CacheClearScope } from './services/cache-service'
 import { configureRecallArchive, RecallArchiveMonitor } from './services/recall-archive-service'
 import { VideoAssetService } from './video-asset-service'
@@ -109,6 +109,10 @@ import { VoiceBatchService } from './voice-pipeline/voice-batch-service'
 import type { VoiceBatchRequest, VoiceMessageReference } from '../shared/voice-recognition'
 import type { AiSearchPipelineRequest } from '../shared/ai-search'
 import type { KnowledgeSearchIpcRequest, KnowledgeSearchIpcResult } from '../shared/knowledge'
+import {
+  isWindowsVcRuntimeMissingError,
+  WINDOWS_VC_RUNTIME_ERROR_MESSAGE
+} from '../shared/windows-runtime'
 import { KnowledgeSearchService } from './knowledge/knowledge-search-service'
 import { AiSearchPipelineService } from './services/ai-search-pipeline-service'
 
@@ -506,6 +510,13 @@ app.whenReady().then(async () => {
   wcdbBootstrapPromise = bootstrapWcdbNativeAsync().then(() => {
     console.log('[WCDB4] async bootstrap complete')
   })
+  void wcdbBootstrapPromise.catch((error) => {
+    appLogger.write({
+      level: 'error',
+      scope: 'wcdb-bootstrap',
+      message: error instanceof Error ? error.message : String(error)
+    })
+  })
 
   // 设置应用程序用户模型 ID
   electronApp.setAppUserModelId('com.wechatexplorer.app')
@@ -529,6 +540,7 @@ app.whenReady().then(async () => {
   ipcMain.handle('app-update:download', () => appUpdateService.download())
   ipcMain.handle('app-update:install', () => appUpdateService.install())
   ipcMain.handle('cache:getSummary', () => getCacheSummary())
+  ipcMain.handle('cache:openKnowledgeDirectory', () => openKnowledgeDirectory())
   ipcMain.handle('cache:clear', async (_, scope: CacheClearScope) => {
     const allowedScopes: CacheClearScope[] = ['bootstrap', 'electron', 'knowledge', 'all']
     if (!allowedScopes.includes(scope)) return getCacheSummary()
@@ -625,7 +637,16 @@ app.whenReady().then(async () => {
         return { success: true, monitoring }
       } catch (error) {
         console.error('Failed to init DB:', error)
-        return { success: false, error: error instanceof Error ? error.message : String(error) }
+        const detail = error instanceof Error ? error.message : String(error)
+        if (isWindowsVcRuntimeMissingError(detail, process.platform)) {
+          return {
+            success: false,
+            code: 'VC_RUNTIME_MISSING',
+            error: WINDOWS_VC_RUNTIME_ERROR_MESSAGE,
+            monitoring: false
+          }
+        }
+        return { success: false, error: detail }
       } finally {
         dbInitInFlight = null
       }

src/main/services/cache-service.ts

@@ -1,4 +1,4 @@
-import { app, session } from 'electron'
+import { app, session, shell } from 'electron'
 import fs from 'fs-extra'
 import path from 'path'
 import { clearBootstrapCache } from './bootstrap-cache'
@@ -62,7 +62,8 @@ export function getCacheSummary(): CacheSummary {
     {
       id: 'knowledge',
       label: '本地知识库索引',
-      description: '为问问微信建立的所有账号本地检索索引。清理后需手动重新建立，不影响微信原始数据。',
+      description:
+        '为问问微信建立的所有账号本地检索索引。清理后需手动重新建立，不影响微信原始数据。',
       ...knowledge
     }
   ]
@@ -90,3 +91,13 @@ export async function clearCache(
   }
   return getCacheSummary()
 }
+
+export async function openKnowledgeDirectory(): Promise<{ success: boolean; error?: string }> {
+  try {
+    await fs.ensureDir(KNOWLEDGE_CACHE_DIR)
+    const error = await shell.openPath(KNOWLEDGE_CACHE_DIR)
+    return error ? { success: false, error } : { success: true }
+  } catch (error) {
+    return { success: false, error: error instanceof Error ? error.message : String(error) }
+  }
+}

src/main/services/chat-service.ts

@@ -9,6 +9,10 @@ import type {
   DatabaseKeyValidationCode,
   DatabaseKeyValidationResult
 } from '../../shared/database-key'
+import {
+  isWindowsVcRuntimeMissingError,
+  WINDOWS_VC_RUNTIME_ERROR_MESSAGE
+} from '../../shared/windows-runtime'
 import { mergeRecallArchiveMessages, recordRecallArchiveMessages } from './recall-archive-service'
 import type { ExportImageQuality } from '../../shared/image-quality'
 
@@ -675,11 +679,13 @@ const DATABASE_KEY_ERROR_MESSAGES: Record<DatabaseKeyValidationCode, string> = {
   ACCOUNT_MISMATCH: '密钥与当前账号不匹配',
   ROOT_UNAVAILABLE: '当前数据库目录不可用',
   DATABASE_FILE_MISSING: '数据库文件缺失',
+  VC_RUNTIME_MISSING: WINDOWS_VC_RUNTIME_ERROR_MESSAGE,
   UNKNOWN_VALIDATION_ERROR: '未知验证错误'
 }
 
 function mapConnectionError(detail: string): DatabaseKeyValidationCode {
   const normalized = detail.toLowerCase()
+  if (isWindowsVcRuntimeMissingError(detail, process.platform)) return 'VC_RUNTIME_MISSING'
   if (normalized.includes('-1005') || normalized.includes('不匹配')) return 'ACCOUNT_MISMATCH'
   if (normalized.includes('session.db') || normalized.includes('数据库文件')) {
     return 'DATABASE_FILE_MISSING'